Psychology

Question 1

Polysomnography

Answer 1

An intense study of sleep, involving monitoring and recording various physiological responses during the night

Question 2

D.A.R.E

Answer 2

Detects, Amplifies, Records Electrical activity…..

Question 3

Electroencephalograph

Answer 3

“D.A.R.E”…. Of the brain

Question 4

Electromyograph

Answer 4

“D.A.R.E”….. Of the muscles

Question 5

Electro-occulograph

Answer 5

“D.A.R.E”…..around the eyes

Question 6

Galvanic skin response

Answer 6

A physiological response indicator “D.A.R.E”…..of the skin

Question 7

P values

Answer 7

Yes, the p value is statistically significant as there is 2% probability that the results were due to chance and not the IV

Question 8

P values

Answer 8

No, the P value is not statistically significant as there is a 7% probability that the results were due to chance and not the IV

Question 9

NREM SLEEP

Answer 9

• In adults one cycle of NREM lasts about 70-90 minutes
• Consists of 4 distinct stages, each with a different wave pattern
• Lasts about 80-120 minutes
• go through cycle approximately 4-5 times during 8hrs of sleep
• 80% is spent in NREM
• first half of night has more NREM than the second half
• brain is active
• time when the body recovers e.g. Repair body tissue, replenishing neurotransmitters

Question 10

NREM 4 stages

Answer 10

Light sleep -> deep sleep -> deepest stage -> light

Question 11

Brain waves

Answer 11

The number of brain waves

Question 12

Amplitude

Answer 12

Intensity of the brain waves

Question 13

Alpha waves

Answer 13

Associated with relaxation and drowsiness, characterised by a relatively high frequency and medium altitude brain waves

Question 14

Stage 1: Physiological

Answer 14

• decrease in heart rate
• decrease in respiration
• decrease in body temp
• decrease in muscle tension

Question 15

Hypnic jerk

Answer 15

Where a part of your body goes into a spasm

-alpha waves are replaced by theta waves which have a high and low amplitude

Question 16

Stage 2

Answer 16

Lasts about 10-20 minutes

Question 17

Physiological changes in stage 2

Answer 17

• body movements lessen
• breathing becomes more regular
• blood pressure and temperature continue to fall
• heart rate is lower

Question 18

Sleep spindles

Answer 18

Lasts for 1 second, indicator that the person is truly asleep

Question 19

K complexes

Answer 19

Bursts of low frequency and higher amplitude waves to arousing stimuli

Question 20

Stage three: Physiological

Answer 20

• heart rate, blood pressure and body temperature drop more
• breathing continues to be slow and steady
• become extremely relaxed

Question 21

Delta waves

Answer 21

Make up 20-50% of brain waves recorded during stage 3, they are slow, large regular brain waves

When delta waves take up 50%, they have entered stage 4 and are difficult to wake

Question 22

Sleep

Answer 22

Altered state of consciousness characterised by a loss of conscious awareness

Question 23

Stage 4

Answer 23

• muscles completely relaxed, we barely move
• delta waves dominate and are slower and larger than in stage 3
• difficult to wake
• 10 minutes to orient themselves and have poor memory
• sleep inertia